TW202121464A - Keyswitch structure - Google Patents

Abstract

A keyswitch structure includes a keycap, a base, and a lift mechanism connected to and between the keycap and the base plate. The base includes a switch, which includes a first magnetic part, a triggering support, an intermediate support, a conducting part, a resilient structure, and two electrical terminals. The triggering support and the intermediate support are rotatably or deflectably disposed. The triggering support includes a second magnetic part and abuts against the intermediate support. The intermediate support abuts against the conducting part. The resilient structure is connected to the conducting part to drive the conducting part to move toward one of the two electrical terminals. The first magnetic part and the second magnetic part produces a magnetic attraction force therebetween for driving the triggering support to drive the conducting part through the intermediate support to move away from the electrical terminal. When the keycap is pressed, the magnetic attraction force is overcome so that the triggering support is driven by the resilient structure to make the two electrical terminals electrically connected.

Description

Button structure

The present invention relates to a key structure, in particular to a key structure with mechanical closing and opening.

The traditional button structure with mechanical closing and opening usually uses the keycap to trigger the switch contact directly or indirectly through the elastic dome. However, regardless of the aforementioned trigger mechanism, the force exerted by the trigger switch contact is the same as the force exerted by the user pressing the keycap Directly related, this will make the contact force of the switch contacts sometimes large and sometimes small. This phenomenon may not only cause excessive wear on the surface of the contact and affect the contact resistance of the contact, but also may cause fatigue of the elastic structure of the connecting contact (for example, an elastic structure such as a cantilever structure generates contact opening and closing states). Therefore, the service life of the switch of this type of key structure will be shortened in different degrees according to the user's habit of pressing and applying force, that is, the service life of the key structure is shortened, and with the time of use, the user will also be in operation. Feel the sensitivity of the switch drop.

In view of the problems in the prior art, the present invention provides a button structure that uses indirect triggering to turn on the switch contacts, so that the pressing force on the keycap is independent of the force that triggers the switch contacts, thereby achieving the effect of protecting the contacts; and, Because the key structure is matched with the application of magnetic attraction, the key structure can be operated for a long time.

The key structure according to the present invention includes a key cap, a base, and a lifting mechanism. The lifting mechanism is correspondingly arranged between the base and the key cap, and the key cap can move up and down relative to the base via the lifting mechanism. The base is arranged under the key cap and includes a switch. The switch includes a shell, a trigger bracket, an intermediate bracket, a conductive element, an elastic structure, a first electrical terminal and a second electrical terminal. The housing includes a first magnetic part, the first electrical terminal and the second electrical terminal are fixedly arranged on the housing, the trigger bracket and the intermediate bracket are rotatably or deflectably arranged on the housing, The conductive member is arranged opposite to the first electrical terminal. The trigger bracket includes a pressing part, a second magnetic part and a first pushing part. The pressing part protrudes from the housing and is located under the key cap. A magnetic attraction force is generated between the first magnetic part and the second magnetic part. The intermediate bracket includes a second pushing portion and a third pushing portion, the second pushing portion is arranged opposite to the first pushing portion, and the third pushing portion is arranged opposite to the conductive member. The conductive member is arranged opposite to the first electrical terminal. The elastic structure is connected between the conductive element and the housing to drive the conductive element to move toward the first electrical terminal. Wherein, when the pressing portion is not pressed, the magnetic attraction forces the trigger bracket to rotate to the first magnetic portion, so that the trigger bracket abuts against the second thrust portion via the first thrust portion to rotate the intermediate bracket , So that the intermediate bracket abuts against the conductive element via the third pushing portion to move the conductive element, so that the conductive element is away from the first electrical terminal. Furthermore, when the keycap moves toward the base to press the pressing portion to a set position, the first pushing portion moves in a direction away from the second pushing portion, and the elastic structure drives the conductive member toward the first The electrical terminal moves and rotates the intermediate bracket via the third pushing portion, so that the conductive member contacts the first electrical terminal to conduct the first electrical terminal and the second electrical terminal. Thereby, the contact force of the conductive element contacting the first electrical terminal is independent of the pressing force (for example, applied by the user) of the key cap or the pressing force received by the pressing portion, so the conductive element contacts the first electrical terminal. The contact force of the terminal can be designed to achieve the effect of protecting the contact.

Compared with the prior art, the key structure of the present invention has nothing to do with the force of the trigger switch contact (ie electrical terminal) when the pressing force of the key cap is actuated, so it has the function of protecting the contact, so that the service life of the switch will be reduced. The service life of the mechanical switch in the conventional technology is much longer, and the service life of the key structure is also longer than the service life of the key structure in the conventional technology.

The advantages and spirit of the present invention can be further understood from the following detailed description of the invention and the accompanying drawings.

Please refer to Figure 1 to Figure 8. According to an embodiment, a key structure 1 includes a key cap 12, a lifting mechanism 14 and a base 16. The base 16 is arranged under the key cap 12. The elevating mechanism 14 is provided between the base 16 and the key cap 12, and the key cap 12 can move up and down relative to the base 16 via the elevating mechanism 14. The base 16 includes a switch 162. The switch 162 includes a housing 1622, a trigger bracket 1624, an intermediate bracket 1626, a conductive member 1628, an elastic structure 1630, a first electrical terminal 1632, and a second electrical terminal 1634. The first electrical terminal 1632 and the second electrical terminal 1634 are fixedly disposed on the housing 1622. The trigger bracket 1624 and the intermediate bracket 1626 are rotatably disposed on the housing 1622. The conductive member 1628 is disposed opposite to the first electrical terminal 1632. The trigger bracket 1624 includes a pressing portion 1624a, a second magnetic portion 1624b, and a first pushing portion 1624c. The pressing portion 1624a protrudes from the housing 1622 and is disposed under the key cap 12, so that the key cap 12 can move downward to press The pressing portion 1624a. The housing 1622 includes a first magnetic portion 1622a, and a magnetic attraction force F1 is generated between the first magnetic portion 1622a and the second magnetic portion 1624b (shown by a double arrow in FIGS. 5 and 7). The middle bracket 1626 includes a second pushing portion 1626a and a third pushing portion 1626b. The second pushing portion 1626a is arranged opposite to the first pushing portion 1624c, and the third pushing portion 1626b is arranged opposite to the conductive member 1628. The conductive member 1628 is arranged opposite to the first electrical terminal 1632. The elastic structure 1630 is connected between the conductive member 1628 and the housing 1622 to drive the conductive member 1628 to move toward the first electrical terminal 1632.

Wherein, when the pressing portion 1624a is not pressed (as shown in FIG. 5 and FIG. 6), the magnetic attraction F1 drives the trigger bracket 1624 to rotate to the first magnetic portion 1622a, so that the trigger bracket 1624 abuts via the first pushing portion 1624c The second pushing portion 1626 a rotates the middle bracket 1626 so that the middle bracket 1626 abuts the conductive member 1628 via the third pushing portion 1626 b to move the conductive member 1628 so that the conductive member 1628 is away from the first electrical terminal 1632. In addition, when the keycap 12 (for example, pressed by the user) moves toward the base 16 and overcomes the magnetic attraction F1 to press the pressing portion 1624a to a set position (as shown in FIGS. 7 and 8), the first pushing portion 1624c Moving in a direction away from the second pushing portion 1626a, the elastic structure 1630 drives the conductive member 1628 to move toward the first electrical terminal 1632 and rotates the intermediate bracket 1626 via the third pushing portion 1626b, so that the conductive member 1628 contacts the first electrical terminal 1632 to The first electrical terminal 1632 and the second electrical terminal 1634 are connected. Thereby, the contact force of the conductive member 1628 contacting the first electrical terminal 1632 and the pressing force received by the keycap 12 (for example, applied by the user) or the pressing force received by the pressing portion 1624a (for example, direct contact or pressing from the keycap 12) ) Has nothing to do, so the contact force of the conductive element 1628 contacting the first electrical terminal 1632 can be designed to achieve the effect of protecting the contact, so that the service life of the switch 162 will be much longer than the service life of the mechanical closing in the prior art.

In this embodiment, the housing 1622 includes an upper housing member 1622b and a lower housing member 1622c. The upper housing member 1622b and the lower housing member 1622c are connected to form an accommodating space 1622d, and the first magnetic portion 1622a is disposed on the upper housing member 1622b . The middle bracket 1626, the conductive member 1628, the elastic structure 1630, and the first electrical terminal 1632 are disposed in the accommodating space 1622d. The trigger bracket 1624 is partially located in the accommodating space 1622d, the second magnetic portion 1624b and the first pushing portion 1624c are located in the accommodating space 1622d, and the pressing portion 1624a protrudes from the upper shell 1622b. The middle bracket 1626 is located between the conducting member 1628 and the trigger bracket 1624, and the trigger bracket 1624 and the middle bracket 1626 are linked by rotation; wherein, the trigger bracket 1624 is rotated with a first axis of rotation A1 (shown in FIGS. 3 and 4 by the key line). 6 and 8) is rotatable with respect to the housing 12, and the intermediate bracket 1626 is rotatable with respect to the housing 12, and the intermediate bracket 1626 is shown in a second rotation axis A2 (indicated by the key line in Fig. 4, and indicated by the cross in 5 to 8) is rotatable relative to the housing 1622, the first rotation axis A1 and the second rotation axis A2 are parallel, and the first pushing portion 1624c and the second pushing portion 1626a are located in the first rotation axis Between A1 and the second rotation axis A2. In practice, the trigger bracket 1624 can also be designed to link the intermediate bracket 1626 through deflection. For example, the trigger bracket 1624 is implemented in a cantilever structure (for example, one end of the trigger bracket 1624 is fixed in the housing 1622), so that the trigger bracket 1624 can be deflected. On the housing 1622, the intermediate bracket 1626 can also be linked. In the same way, the middle bracket 1626 is also the same, and will not be repeated here. In addition, in practice, the first rotation axis A1 and the second rotation axis A2 are not limited to be parallel, and can also achieve the linkage of the trigger bracket 1624, the intermediate bracket 1626 and the conductive member 1628 as described above.

In addition, in this embodiment, the trigger bracket 1624 includes a pivoting portion 1624d at one end thereof, and the pressing portion 1624a is located between the first pushing portion 1624c and the pivoting portion 1624d. The housing 1622 includes a pivoting structure 1622e (for example, but not limited to, implemented by two grooves formed on the upper shell 1622b), and the trigger bracket 1624 is rotatably disposed with respect to the first rotation axis A1 through the pivoting portion 1624d The pivoting structure 1622e is pivotally connected to the housing 1622, so that the trigger bracket 1624 is rotatable relative to the housing 1622 with the pivoting portion 1624d as a fulcrum. The middle bracket 1626 includes a pivoting portion 1626c located between the second pushing portion 1626a and the third pushing portion 1626b. The housing 1622 includes a pivoting structure 1622f (for example, but not limited to, implemented by four protruding posts formed on the upper shell 1622b), and the middle bracket 1626 is rotatably disposed on the second rotation axis A2 through the pivoting portion 1626c. The pivoting structure 1622f is pivotally connected to the housing 1622, so that the intermediate bracket 1626 is rotatable relative to the housing 1622 with the pivoting portion 1626c as a fulcrum.

In this embodiment, the elastic structure 1630 is located below the trigger bracket 1624, the conductive member 1628 is located below the first electrical terminal 1632 and the third pushing portion 1626b, and the elastic structure 1630 will drive the conductive member 1628 to move upward to contact the first electrical terminal 1632 . In this embodiment, the elastic structure 1630 is substantially provided with a cantilever structure to provide elasticity. The elastic structure 1630 includes an elastic cantilever 1630a and an elastic support arm 1630b. The elastic support arm 1630b is connected to the elastic cantilever 1630a and abuts against the lower shell 1622c. The conductive member 1628 is connected to the free end of the elastic cantilever 1630a, and the fixed end of the elastic cantilever 1630a is sandwiched between the upper shell 1622b and the lower shell 1622c. When the conductive member 1628 moves toward the first electrical terminal 1632, the elastic cantilever 1630a deviates from the elastic support arm 1630b. In practice, the elastic structure 1630 may be implemented by other structures that can provide elastic force, such as a spring (elastically compressed and arranged between the conducting member 1628 and the lower shell member 1622c). In addition, in practice, if the elastic cantilever 1630a can provide sufficient elasticity, the elastic support arm 1630b must also be omitted. In addition, in practice, the elastic support arm 1630b is also replaced by a spring (for example, elastically compressed and arranged between the elastic cantilever 1630a and the lower shell 1622c).

In addition, in this embodiment, the elastic structure 1630 also has an electrical connection function, and the conductive member 1628 and the second electrical terminal 1634 are electrically connected via the elastic structure 1630; wherein, the conductive member 1628 is connected to the free end of the elastic cantilever 1630a, and the second electrical The terminal 1634 is connected to the fixed end of the elastic cantilever 1630a. The conductive member 1628, the elastic structure 1630, and the second electrical terminal 1634 are integrally formed with a metal plate (for example, by bending the metal plate), and the second electrical terminal 1634 is exposed from the housing 1622. In practice, the conductive element 1628, the elastic structure 1630, and the second electrical terminal 1634 can also be made of other materials, and only need to have a conductive function (for example, a conductive layer is formed on the plastic part). In addition, in practice, the conductive member 1628 can also be electrically connected to the second electrical terminal 1634 in other ways, for example, directly connected with a wire. In addition, in practice, the first electrical terminal 1632 and the second electrical terminal 1634 can be designed to be adjacent but separated from each other, so that when the pressing portion 1624a is pressed to the set position, the conductive member 1628 contacts the first electrical terminal 1632 at the same time. And the second electrical terminal 1634, and when the pressing portion 1624a is not pressed, the conductive member 1628 is at the same time away from the first electrical terminal 1632 and the second electrical terminal 1634. In addition, in practice, it can be designed such that the first electrical terminal 1632 and the second electrical terminal 1634 are arranged oppositely, and at least one of them can be pushed by the conductive member 1628 (for example, the first electrical terminal 1632 is movable), so that the pressing portion When 1624a is pressed to the set position, the conductive member 1628 contacts and moves the first electrical terminal 1632, so that the first electrical terminal 1632 contacts the second electrical terminal 1634 to achieve conduction between the two; at this time, the conductive member 1628 does not have The conductive function is limited.

In this embodiment, the second pushing portion 1626a has a contact plane 1626d located between the first rotation axis A1 and the second rotation axis A2. As shown in FIG. 5, when the pressing portion 1624a is not pressed by the keycap 12, the contact plane 1626d is substantially vertical, and the first pushing portion 1624c abuts the contact plane 1626d. In this way, the trigger bracket 1624 can effectively prevent or at least inhibit the intermediate bracket 1626 from rotating accidentally and causing the conductive member 1628 to accidentally conduct the first electrical terminal 1632 and the second electrical terminal 1634. In addition, as shown in FIG. 6, when the keycap 12 moves toward the base 16 to press the pressing portion 1624a to the set position, the first pushing portion 1624c is located below the second pushing portion 1626a. Thereby, when the keycap 12 is no longer pressed, the trigger bracket 1624 (driven by the magnetic attraction force F1 to rotate) is easy to rotate the intermediate bracket 1626.

In addition, in this embodiment, the first magnetic portion 1622a and the second magnetic portion 1624b are located on both sides of the upper shell 1622b, and the first magnetic portion 1622a is movably disposed on the upper shell 1622b, so that the first magnetic The position of the portion 1622a before and after the trigger bracket 1624 rotates relative to the housing 1622 (ie) will slightly change, which helps when the pressing portion 1624a is not pressed by the keycap 12, the first magnetic portion 1622a and the second magnetic portion 1624b They are relatively close to each other, so that the magnetic attraction F1 can easily maintain the position of the trigger bracket 1624. In addition, in this embodiment, one of the first magnetic portion 1622a and the second magnetic portion 1624b is a magnet, and the other of the first magnetic portion 1622a and the second magnetic portion 1624b is a paramagnetic metal piece; As above, the first magnetic portion 1622a and the second magnetic portion 1624b may both be magnets. Moreover, in this embodiment, the trigger bracket 1624 includes a plastic body 1624e, and the second magnetic portion 1624b is embedded in the plastic body 1624e. In practice, the trigger bracket 1624 as a whole can also be directly implemented with a paramagnetic metal piece.

In this embodiment, the housing 1622 further includes a metal frame 1622g sandwiched between the upper housing 1622b and the lower housing 1622c and exposed from the housing 1622. The metal frame 1622g and the first electrical terminal 1632 are integrally formed. Logically, the first electrical terminal 1632 can also be regarded as protruding from the housing 1622. In practice, when the metal frame 1622g is not directly connected to the first electrical terminal 1632, the first electrical terminal 1632 is The electrical terminal 1632 can extend outward from the housing 1622 and protrude from the housing 1622. In this embodiment, the metal frame 1622g includes a first connecting structure 1622h (implemented by a sliding groove formed by a pair of hooks) and a hook structure 1622i (implemented by a pair of hooks). Hold the upper shell 1622b. The upper shell 1622b includes a second connecting structure 1622j (implemented by a pair of card slots). The key cap 12 includes a cap body 122 and a plurality of connecting structures 124 on the lower surface thereof. The lifting mechanism 14 is connected to the base 16 through the first connection structure 1622h and the second connection structure 1622j, and is also connected to the key cap 12 through the connection structure 124. In this embodiment, the lifting mechanism 14 is a scissor foot bracket, but the present invention is not limited to this. For example, a cantilever structure, a telescopic mechanism with a stacked sleeve structure, or two separate brackets are used as the lifting mechanism. In addition, in this embodiment, the base 16 includes a bottom plate 164, and the housing 1622 is disposed on the bottom plate 164. In practice, the lifting mechanism 14 can also be connected to the bottom plate 164, or connected to the housing 1622 and the bottom plate 164 of the switch 162 at the same time (for example, one of the brackets is connected to the bottom plate 164, and the other bracket is connected to the housing 1622). ).

In this embodiment, the base 16 further includes a light-emitting element 166 (for example, but not limited to, implemented by a light-emitting diode) disposed on the bottom plate 164, and the light-emitting direction D1 of the light-emitting element 166 (shown as an arrow in FIGS. 5 and 5) 7) facing the keycap 12 (for example, to provide a backlight). The housing 1622 is disposed on the bottom plate 164 adjacent to the light-emitting element 166. Furthermore, in this embodiment, the bottom plate 164 is a circuit board or a board with a circuit formed thereon, and the bottom plate 164 includes a first solder pad 1642 (the contour of which conforms to the contour of the metal frame 1622g, both of which are approximately C-shaped) And a second bonding pad 1644. The first electrical terminal 1632 is welded to the first bonding pad 1642 (for example, the metal frame 1622g is welded to the first bonding pad 1642), and the second electrical terminal 1634 is welded to the second bonding pad 1644. In addition, in practice, the switch 162 can also be fixed to the bottom plate 164 by other means, such as but not limited to the housing 1622 embedded on the bottom plate 164 (for example, through a groove or opening formed on the bottom plate 164), or a shell The body 1622 is fixed on the bottom plate 164 in an adhesive manner or by a fixing member (such as a screw or a hook structure). In addition, in this embodiment, the first electrical terminal 1632 (for example, via the metal frame 1622g) and the second electrical terminal 1634 of the switch 162 protrude from the housing 1622. Therefore, in practice, when the key structure 1 is applied to a keyboard In the middle, the keyboard will include multiple key structures 1, and the key structures 1 can share the same circuit board (or bottom plate 164). The switches 162 of these key structures 1 can be soldered to the shared circuit by, for example, but not limited to, surface mount technology. On the board. The foregoing descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made in accordance with the scope of the patent application of the present invention shall fall within the scope of the present invention.

1: Button structure 12: keycap 122: cap body 124: Connection structure 14: Lifting mechanism 16: base 162: Switch 1622: shell 1622a: The first magnetic part 1622b: Upper shell 1622c: lower shell 1622d: housing space 1622e, 1622f: pivot structure 1622g: metal frame 1622h: The first connection structure 1622i: hook structure 1622j: second connection structure 1624: trigger bracket 1624a: pressing part 1624b: The second magnetic part 1624c: The first push part 1624d: pivot 1624e: plastic body 1626: Intermediate bracket 1626a: The second push part 1626b: The third push part 1626c: pivot 1626d: contact plane 1628: Lead 1630: elastic structure 1630a: Flexible cantilever 1630b: Elastic support arm 1632: The first electrical terminal 1634: second electrical terminal 164: bottom plate 1642: The first pad 1644: second pad 166: Light-emitting element A1: The first axis of rotation A2: The second axis of rotation D1: Light emitting direction F1: Magnetic attraction

Fig. 1 is a schematic diagram of a key structure according to an embodiment. Fig. 2 is a schematic diagram of a partial explosion of the button structure in Fig. 1. Fig. 3 is a schematic diagram of a partial explosion of the base in Fig. 2. Figure 4 is an exploded view of the base in Figure 2. Fig. 5 is a cross-sectional view of the base in Fig. 3 along the line X-X. Fig. 6 is a cross-sectional view of the base in Fig. 3 along the line Y-Y. Fig. 7 is a cross-sectional view of the switch in Fig. 5 when the pressing part of the trigger bracket is pressed. 8 is a cross-sectional view of the switch in FIG. 6 when the pressing portion of the trigger bracket is pressed.

16: base

1622a: The first magnetic part

1622b: Upper shell

1622c: lower shell

1622d: housing space

1622f: pivot structure

1622g: metal frame

1624a: pressing part

1624b: The second magnetic part

1624c: The first push part

1624e: plastic body

1626: Intermediate bracket

1626a: The second push part

1626b: The third push part

1626c: pivot

1626d: contact plane

1628: Lead

1630: elastic structure

1630a: Flexible cantilever

1630b: Elastic support arm

1632: The first electrical terminal

1634: second electrical terminal

164: bottom plate

1642: The first pad

1644: second pad

166: Light-emitting element

A2: The second axis of rotation

D1: Light emitting direction

F1: Magnetic attraction

Claims (19)

A key structure, including: One-key cap A base is arranged under the key cap. The base includes a switch. The switch includes a housing, a trigger bracket, an intermediate bracket, a conductive member, an elastic structure, a first electrical terminal, and a second electrical terminal , The housing includes a first magnetic part, the first electrical terminal and the second electrical terminal are fixedly arranged on the housing, and the trigger bracket and the intermediate bracket are rotatably or deflectably arranged on the housing , The conductive member is disposed relative to the first electrical terminal, the trigger bracket includes a pressing part, a second magnetic part and a first pushing part, the pressing part protruding from the housing and located below the key cap, the A magnetic attraction force is generated between the first magnetic portion and the second magnetic portion, the middle bracket includes a second pushing portion and a third pushing portion, and the second pushing portion is disposed opposite to the first pushing portion , The third abutting portion is disposed opposite to the conductive member, the conductive member is disposed opposite to the first electrical terminal, and the elastic structure is connected between the conductive member and the housing to drive the conductive member toward the first electrical terminal. Terminal movement; and A lifting mechanism arranged between the base and the key cap, the key cap being able to move up and down relative to the base via the lifting mechanism; Wherein, when the pressing portion is not pressed, the magnetic attraction forces the trigger bracket to rotate to the first magnetic portion, so that the trigger bracket abuts against the second thrust portion via the first thrust portion to rotate the intermediate bracket , So that the intermediate bracket abuts against the conductive member via the third pushing portion to move the conductive member, so that the conductive member is away from the first electrical terminal; Wherein, when the keycap moves toward the base to press the pressing portion to a set position, the first pushing portion moves away from the second pushing portion, and the elastic structure drives the conductive member toward the first The electrical terminal moves and rotates the intermediate bracket via the third pushing portion, so that the conductive member contacts the first electrical terminal to conduct the first electrical terminal and the second electrical terminal. The key structure according to claim 1, wherein the housing includes an upper shell member, the first magnetic portion is movably disposed on the upper shell member, and the first magnetic portion and the second magnetic portion are located on the upper shell member. On both sides of the shell member, the pressing portion protrudes from the upper shell member. The button structure according to claim 2, wherein when the keycap moves toward the base to press the pressing portion to the set position, the first pushing portion is located below the second pushing portion. The button structure according to claim 1, wherein the middle bracket is located between the trigger bracket and the conductive member. The button structure according to claim 4, wherein the middle bracket includes a pivoting portion located between the second pushing portion and the third pushing portion, and the middle bracket uses the pivoting portion as a fulcrum relative to the The housing is rotatable. The button structure according to claim 5, wherein the housing includes a pivot structure, and the intermediate bracket is pivotally connected to the pivot structure by the pivot portion. The button structure according to claim 5, wherein the trigger bracket is rotatable with respect to the housing with a first rotation axis, and the intermediate bracket is rotatable with respect to the housing with a second rotation axis, the The first pushing portion and the second pushing portion are located between the first rotation axis and the second rotation axis. The button structure according to claim 1, wherein the trigger bracket is rotatable with respect to the housing with a first rotation axis, the intermediate bracket is rotatable with respect to the housing with a second rotation axis, the The second pushing portion has a contact plane located between the first rotation axis and the second rotation axis. When the pressing portion is not pressed by the keycap, the contact plane is substantially vertical. A pushing portion abuts against the contact plane. The button structure according to claim 1, wherein the conductive element is electrically connected to the second electrical terminal. The button structure according to claim 9, wherein the conductive member, the elastic structure and the second electrical terminal are integrally formed with a metal plate. The button structure according to claim 10, wherein the elastic structure connects the conductive element and the second electrical terminal, the elastic structure includes an elastic cantilever, the second electrical terminal is connected to the fixed end of the elastic cantilever, and the conductive element Connect to the free end of the elastic cantilever. The button structure according to claim 11, wherein the elastic structure includes an elastic support arm, the elastic support arm is connected with the elastic cantilever and abuts the housing, and when the conductive member moves toward the first electrical terminal, the The elastic cantilever deviates from the elastic support arm. The button structure according to claim 1, wherein the casing includes an upper casing member and a lower casing member, the upper casing member is connected with the lower casing member to form an accommodating space, and the first magnetic part is disposed on the upper casing On the component, the intermediate support, the conductive component, the elastic structure, and the first electrical terminal are disposed in the accommodating space, the second magnetic portion and the first pushing portion are located in the accommodating space, and the pressing portion Protruding from the upper shell part. The button structure according to claim 13, wherein the intermediate bracket is located between the conductive member and the trigger bracket, the elastic structure is located below the trigger bracket, and the conductive member is located under the first electrical terminal and the third pushing portion square. The button structure according to claim 13, wherein the housing includes a metal frame sandwiched between the upper housing member and the lower housing member and exposed to the housing, and the metal frame is integrated with the first electrical terminal After molding, the metal frame includes a first connection structure, the upper shell includes a second connection structure, the lifting mechanism is connected to the base via the first connection structure and the second connection structure, and the second electrical terminal is exposed In the shell. The button structure according to claim 15, wherein the metal frame includes a hook structure to hold the upper shell member. The key structure according to claim 13, wherein the base includes a bottom plate and a light emitting element disposed on the bottom plate, the light emitting direction of the light emitting element faces the key cap, and the housing is disposed on the bottom plate adjacent to the light emitting element . The button structure according to claim 17, wherein the bottom plate is a circuit board, which includes a first solder pad and a second solder pad, the first electrical terminal is soldered to the first solder pad, and the second electrical terminal Solder to the second bonding pad. The key structure according to claim 1, wherein one of the first magnetic portion and the second magnetic portion is a magnet, and the other of the first magnetic portion and the second magnetic portion is a paramagnetic metal member The trigger bracket includes a plastic body, and the second magnetic part is embedded in the plastic body.

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